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G. W. BROWN.

WINDING DRUM.

APPLICATION FILED AUG-25, i917.

Patented July 1-5, 1919.

WITNESSES ATTORN EY "rm: COLUMBXA PLANOGRA 0., WASHINGTON, I). c.

GEORGE w. BROWN, or roar TERRY, NEW YORK.

WINDiNG-DRUM.

Specification of Letters Patent.

Patented July 15, 1919.

Application filed August 25, 1917. Serial No. 183,107.

To all whom it may concern Be it known thatI, GEORGE W. BROWN, a citizen of the United States, residing at Fort Terry, in the county of Suffolk and State of New York, have invented new and useful Improvements in Winding-Drums, of which the following is a specification.

This invention relates to winding drums, and more especially to those which are suspended and are actuated by spur gearing; and the object of the same is to produce an extremely strong sectional drum of this kind wherein the load isthro'wn alternately on the section as the drum is revolved.

The further object is to produce a sectional drum whose sections or parts may be formed separately by suitable processes and subsequently united, and which are held to gether by the shaft whereon the sections are rotatably mounted.

Other objects will appear from the following specification and claims, reference being had to the drawings wherein:

Figure 1 is a side elevation of this device complete, showing the parts as supported by a yoke having a swiveled hook in its arch.

Fig. 2 is a front elevation ofthe complete device, including a block-and-tackle mechanism carried by the lower bolt in the yoke.

Fig. 3 is a perspective view of the two parts of the drum drawn apart and turned a little out of alinement with each other.

Fig. 4 is a side elevation of a support, illustrating the entire device in outline as hung on said support and showing the rope as used for pulling a stump.

Beginning with Fig. 4, the numeral 1 designates an arched support whose feet 2 may rest on the ground alongside a stump S and whose top has a depression 3 wherein is hung a hook l swivelly mounted in the arch 5 of an inverted U-shaped yoke 6, the latter forming the supporting frame for the mechanism yet to be described. The rope is indicated by the letter R, and leads in Fig. 4: from the drum downward to a stump S which it is desired to draw out of the ground. I would have it understood that this view is only illustrative of one use to which my improved drum and driving mechanism may be put.

The drum, best seen in Fig. 3, ismade up of two duplicate parts. Each comprises a gear wheel 10, from the inner side of which project two fingers curved transversely to form, quarter-sectors 11 of the drum-body, each grooved around its outer face as at 12. In Fig. 2 I have shown two'sectors 11, each being one-quarter of a cylinder, but it is ob vious that theremight be a larger number of narrower sectors. The other member of the drum is made in like manner, and when the two parts or members are brought together, the sectors of one pass into the spaces between the sectors of the other. A bolt 13 is then passed through the arms of the yoke 5 and the centers of the gear wheels 10,.with appropriate washers between said arms and the hubs of the wheels, and when the nut is applied to this bolt and the parts drawn up properly the parts of the drum are held in engagement with each other in a manner which will be clear.

Below the drum is located a double-gear 20 mounted fast on a shaft 23 whose trunnions are journaled in the arms of the yoke 6, and one of them is bent laterally into a crank 22 having a handle 21 in the present instance which illustrates the device as driven by hand power. WVithout further illustration it would be clear, however, that this double-gear 20 might be driven by power taken from some other source. Its special feature of construction is that the double-gear or the two gears thereof mesh with the gears 10 of the drum, and therefore when the double-gear is rotated in one direction the gears of the drum are rotated in the opposite direction. As each of the drum-gears is conected with only half of the drum-body, each is under strain only half the time, which time is that period during which the rope R is under tension over a sector 11 connected with the gear in question. Of course all the sectors are drawn constantly toward the axis of the drum by the tightness of the convolutions of the rope wound thereon or passing thereover, but the strain here referred to is the strain incident to the work done rather than that incident to the close embrace of said convolutions.

Mounted on a bolt 33 connecting the lower ends of the yoke-arms is a block-andtackle mechanism, herein shown as consisting of two pulleys 3O journaled on this bolt and separated by a washer 31, two other pulleys 32 mounted on a pin 32, and a bar 34 disposed on said pin between the pulleys and having an eye 35 at one end and a hook 36 at the otherthe last-named pulleys and all parts connected therewith being entirely below the yoke and free from the same.

As seen in Figs. 1 and 2, a winding rope leads from the drum down under a pulley 32, thence up over a pulley 30, thence down under the other pulley 32 and up over the other pulley 30, and thence down to the eye 35 of the bar 84. The hook 36 is connected with the bar 34 and the stump S. Thus it will be seen that the block-andtackle mechanism is carried by the lowermost bolt 33 in the yoke, and as here shown it is part of the structure although it might be separate therefrom.

WVhen now power is applied to the driving gear 20, its two parts mesh with the two driven gear wheels 10 and the twopart drum is rotated slowly but with increased speed around its pivot bolt 13 by reason of the fact that its gears are larger than the driving gears; and when it is turned in proper direction the winding rope 40 is drawn upon and the lower pulleys are raised toward the upper pulleys so that the lifting rope or chain R is drawn upon with great force. If so much force is not necessary, the rope 40 may be led directly to the load, in which case the advantage of constructing the drum in the manner above described will be more apparent. That is to say, as each sector 11 comes over the top and receives the strain thrown onto the rope 40, such strain is conveyed to one of the driven gears 10, and next the strain on the next sector is conveyed to the opposite driven gear 12, but both of the latter carry the strain to the driving gear 20 and to the hand or other power which rotates it, The body of the drum in the illustration herewith is grooved to wind up the convolutions of the rope, but it is obvious that the rope may be passed several times around this drum and led away as usual.

What is claimed is new is 1. In a winding drum, a journaled shaft, drum members of like pattern mounted on the shaft, each member comprising a gear wheel, spaced fingers fixed to the gear wheels, the fingers on one wheel lying in the spaces between. the fingers on the other wheel, the adjacent fingers having their edges in close contact with each other and the fingers carried by one wheel having their ends in contact with the side of the other wheel, all of said fingers having transversely arranged spirally disposed grooves.

2. In a winding drum, drum members, each comprising a gear wheel, spaced segmental sections fixed to the gear wheels and projecting therefrom parallel to the axis, the sections of one wheel lying in the spaces between the sections of the other wheel and having their edges in close contact therewith, the sections on one wheel having their ends abutting the gear of the opposite drum member, a journal shaft passing through said members and means carried thereby for holding the members in proper relation to form a completed drum.

In testimony whereof I afiix my sionature.

GEORGE w. BRGWN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

